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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/um/sys-i386/sigcontext.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/um/sys-i386/sigcontext.c')
-rw-r--r-- | arch/um/sys-i386/sigcontext.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/arch/um/sys-i386/sigcontext.c b/arch/um/sys-i386/sigcontext.c new file mode 100644 index 0000000..467d489 --- /dev/null +++ b/arch/um/sys-i386/sigcontext.c @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +#include <stddef.h> +#include <string.h> +#include <asm/ptrace.h> +#include <asm/sigcontext.h> +#include "sysdep/ptrace.h" +#include "kern_util.h" + +void sc_to_sc(void *to_ptr, void *from_ptr) +{ + struct sigcontext *to = to_ptr, *from = from_ptr; + + memcpy(to, from, sizeof(*to) + sizeof(struct _fpstate)); + if(from->fpstate != NULL) + to->fpstate = (struct _fpstate *) (to + 1); +} + +unsigned long *sc_sigmask(void *sc_ptr) +{ + struct sigcontext *sc = sc_ptr; + return &sc->oldmask; +} + +int sc_get_fpregs(unsigned long buf, void *sc_ptr) +{ + struct sigcontext *sc = sc_ptr; + struct _fpstate *from = sc->fpstate, *to = (struct _fpstate *) buf; + int err = 0; + + if(from == NULL){ + err |= clear_user_proc(&to->cw, sizeof(to->cw)); + err |= clear_user_proc(&to->sw, sizeof(to->sw)); + err |= clear_user_proc(&to->tag, sizeof(to->tag)); + err |= clear_user_proc(&to->ipoff, sizeof(to->ipoff)); + err |= clear_user_proc(&to->cssel, sizeof(to->cssel)); + err |= clear_user_proc(&to->dataoff, sizeof(to->dataoff)); + err |= clear_user_proc(&to->datasel, sizeof(to->datasel)); + err |= clear_user_proc(&to->_st, sizeof(to->_st)); + } + else { + err |= copy_to_user_proc(&to->cw, &from->cw, sizeof(to->cw)); + err |= copy_to_user_proc(&to->sw, &from->sw, sizeof(to->sw)); + err |= copy_to_user_proc(&to->tag, &from->tag, + sizeof(to->tag)); + err |= copy_to_user_proc(&to->ipoff, &from->ipoff, + sizeof(to->ipoff)); + err |= copy_to_user_proc(&to->cssel,& from->cssel, + sizeof(to->cssel)); + err |= copy_to_user_proc(&to->dataoff, &from->dataoff, + sizeof(to->dataoff)); + err |= copy_to_user_proc(&to->datasel, &from->datasel, + sizeof(to->datasel)); + err |= copy_to_user_proc(to->_st, from->_st, sizeof(to->_st)); + } + return(err); +} + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-file-style: "linux" + * End: + */ |